Johnson Controls S-224-1 Switch

The Johnson Controls S-224-1 is a precision-engineered pneumatic gradual switch designed for manual control of pressure in air lines from a remote location. This HVAC pneumatic controller features a 20 psi span, allowing for accurate modulation of pneumatic actuators or dampers within a control circuit. Built for industrial durability, the S-224-1 manual switch utilizes a force-balance mechanism to maintain reliable output pressure settings. As a veteran technician knows, the Johnson Controls pneumatic switch is a staple for local override or setpoint adjustment in legacy pneumatic systems. This unit is designed for panel mounting and requires separate dials based on your specific application requirements, whether you are managing heating, cooling, or ventilation sequences. Its robust construction ensures long-term stability in high-demand environments, making it a reliable choice for maintaining precise pneumatic pressure regulation across commercial facilities.

• Precise Modulation: Provides a steady 20 psi span for accurate manual adjustment of pneumatic control signals.
• Remote Operation: Enables centralized or remote manual selection of pressure levels for efficient building automation overrides.
• Industrial Durability: Solid construction minimizes drift and withstands the rigors of mechanical equipment rooms.
• Versatile Mounting: Standard design allows for easy integration into control panels alongside other pneumatic HVAC components.

What dial should be used with the S-224-1?
The dial is ordered separately to match your specific application, such as 0-20 psi, Open/Closed, or Warm/Cool scales.

Can this switch be used to pilot a larger valve?
Yes, it is frequently used to provide the pilot signal for larger pneumatic actuators or positioners in HVAC sequences.

Does this unit include a pressure gauge?
No, the S-224-1 is the switch assembly only; gauges should be installed inline if visual pressure confirmation is required.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.